3 distinct interactive and participatory dance projects: Narcissus Reflected, RCO and BodyFail, in which various complex elements escape computation. On the level of the variability of audience involvement and participation, statistical evaluation of audience choices and decisions via their mobile phones, and their physical experiential actions and reactions. Finally, like in the case of BodyFail, it is precisely what escapes proper computation that constitutes the thematic itself of the piece: with non-habitual movements audience can make the computer system reach a crash.